Rev higher and increase your RPMs safely!
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Rev higher and increase your RPMs safely!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Brings true 2D mapped water-methanol injection delivery to your DI (direct fuel injected) and forced induction vehicle
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Contains all of the hardware you need to install a new catalytic converter on your A4
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This product was last offered at the strikethrough price on
05-02-2026
Replacement JB4 OBDII cable suitable for use in all applications where the JB4 attaches to the OBDII port under the dash.
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Valve springs and retainers are a MUST for high revving engines!
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Serious engine oil cooling for the most demanding engines
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50 Durometer rubber construction
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Drop-in high flow replacement for your vehicle
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This product was last offered at the strikethrough price on
03-16-2026
Average gain of 40 HP & 75 LB-FT torque on 93 octane program!
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This upgrade can be performed via our Chip & Ship method or the vehicle can be brought to ECS Tuning's fa
Ship your ECU for free, or drive your vehicle to our location
For customers that already have APR software on their car and are upgrading to a K04
Call In Or Chat For Best Price! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!
This upgrade can be performed via our Chip & Ship method or the vehicle can be brought to ECS Tuning's fa
Ship your ECU for free, or drive your vehicle to our location
Get up to +41HP and +68lb-ft through a safe and easy to use tuning module from RaceChip
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This product was last offered at the strikethrough price on
07-01-2026
Brings true 2D mapped water-methanol injection delivery to your DI (direct fuel injected) and forced induction vehicle
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Brings true 2D mapped water-methanol injection delivery to your EFI (Electronic Fuel Injected) and forced induction vehicle
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Version 1.
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200 psi bypass for smooth and high pressure and 1.3 GPM open flow. Choose quick connect or threaded NPT style fittings.
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Custom made with 100% methanol resistant stainless steel spring and EPDM seals ensuring zero corrosion even with high concentrations of methanol.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms